Rising sea levels driven by unchecked CO2 emissions could eventually put much of the planet underwater, and this film builds its case around research from NASA astrobiologist and paleontologist Peter Ward, alongside American climatologists. It mixes archive footage, location photography, and CGI to show what the coastline looks like as water climbs, working through scenarios that range from a one-meter rise to a full 70-meter flood if every ice sheet on Earth eventually melts. Scientists and politicians appear in interview to lay out the timeline such a flood would follow and what it would do to coastal cities and low-lying nations first. The film also spends time on extreme engineering proposals, sea walls, floating cities, and other large-scale interventions floated as ways to buy time rather than solve the underlying problem. Its argument stays narrow and specific: the physics of ice melt and thermal expansion, not vague warning, are what set the numbers on screen, and those numbers are the film's real subject.